/Engine/Plugins/MovieScene/SequencerScripting/Source/SequencerScripting/Public/ExtensionLibraries/MovieSceneSectionExtensions.h
Set start time in seconds
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Sequencer|Section", Meta=(ScriptMethod)) static void SetStartFrameSeconds ( [UMovieSceneSection](API\Runtime\MovieScene\UMovieSceneSection) * Section, float StartTime )